If you're looking for a program to get fit and flexible, you no longer have to rely on cardiovascular exercise sessions mixed with strength training at the gym. Zumba, Turbo Jam and Malibu Pilates all are fitness classes that include cardiovascular and strength training elements for a well-balanced, full body workout. Each can be modified for your fitness level. To enjoy each fitness class, you don't need to go to the gym; classes are available on DVD so you can do them at home.
Display medals with pride. Distinctions are important and don’t come along without sacrifice. They may be from school, or more importantly, acquired facing danger. If you store them in a box, it might get tucked away in the corner of some obscure closet. Build a glass-topped table to keep medals safe while providing easy access.
The proper way to mount and position a Citizen Band Radio antenna is contingent on the type of antenna and the device or object securing the antenna. CB antennas are commonly mounted on objects including houses and motor vehicles, but some smaller and portable CB devices like CB walkie-talkies directly attach to the antenna. Properly positioning the antenna can maximize transmission and reception quality and range.
The golden age of citizen's band radio -- the late 1970s and early 1980s -- witnessed several significant changes in this venerable radio standard. Although the Federal Communications Commission used to license CB users, this prohibition was dropped largely because advances in transceiver technology meant that the technical learning curve for CB was lower than it used to be. Nevertheless, it's still possible to screw things up. One of the biggest problems? Inappropriate audio feedback.
Top-rated saltwater fishfinders from manufacturers like Garmin, Hummingbird and Lowrance share many of the same qualities. Aside from using powerful sound wave transmitters to locate fish, the best fishfinders present the sonar data on large, colorful display screens, making the information easy to read even when navigating choppy waters. Additional features such as multiple-beam transducers and detailed readings on current water conditions also separate the top saltwater fishfinders from the competition.
The Nook is compatible with ePub and PagePerfect electronic books. EPubbooks are free to download and view using your Nook or Nook Color e-book reader. PagePerfect e-books look similar to electronic magazines and include the ability to zoom in and out on text as well as view thumbnails of each page within the publication. Both ePub and PagePerfect e-books are available from the Barnes & Noble online store.
Sand can cause extensive internal and external damage to even well-constructed cameras, often rendering them unusable. The tiny size and abrasive nature of sand particles means that you might not even realize that sand is getting into your camera until it's too late. Learning the proper precautions to take when around sand will ensure that your camera survives trips to the beach intact.
A filter lets certain frequencies of a signal pass through while muting others. The three main filter types are low pass, high pass and band pass. A low pass filter allows low frequencies to pass through, muting frequencies above the cutoff, while a high filter passes high frequencies while cutting those below the cutoff. A band pass filter is the combination of these two filter types. Operational amplifiers, or op-amps, are integrated component chips that you can use in conjunction with resistors and capacitors to make active filter circuits.
Camera reflectors are typically large circular screens made of reflective fabric. In photography, reflectors help control light, improving image quality by brightening features, filling in shadows and highlighting areas. Camera reflectors come in a wide range of styles and may be used in a number of ways, but their basic function remains consistent.
A relay typically involves a component called an inductor, which generates a magnetic field when current is passed through its coils. This inductor is placed close to an iron lever, so that when the inductor generates a magnetic field, the iron lever is attracted to the inductor. On the opposite end of the lever are two contacts of a different circuit. When the lever moves towards the inductor, those contacts are joined, completing the other circuit. You can test a relay's resistance with a basic multimeter.
Relighting a candle requires you to first extinguish that candle with your finger. Learn about the relighting a candle magic trick with help from an experienced magician in this free video clip.
The red cloth magic trick can be done with any red cloth that you happen to have. Learn about the red cloth magic trick with help from an experienced magician in this free video clip.
The levitation magic trick has been made popular on television in the last few years. Learn about the levitation magic trick with help from an experienced magician in this free video clip.
Making your finger look like it is not there is all about playing with the audience's perspective. Learn about a magic trick that makes your finger look like it is not there with help from an experienced magician in this free video clip.
Removing a tablecloth is very easy to do and only requires a few simple props. Learn about a magic trick for how to remove a tablecloth with help from an experienced magician in this free video clip.
The beauty of the magic wallet is that it is so simple. Find out about how a magic wallet works with help from an experienced magician in this free video clip.
The bendy pen magic trick requires you to put the cap on the pen before you do it. Do the bendy pen magic trick with help from an experienced magician in this free video clip.
The zombie ball magic trick uses a little silver ball on the top of a cloth. Do the zombie ball magic trick with help from an experienced magician in this free video clip.
A fork-twisting magic trick can be done with any regular fork that you may happen to have. Do a fork-twisting magic trick with help from an experienced magician in this free video clip.
Shortwave radio works in much the same way as FM and AM radio, except that you can hear shortwave broadcasts from hundreds and even thousands of miles away from the broadcasting source. Reception of these broadcasts requires a special radio, and gives listeners a peek into the news, culture and music of the people where these broadcasts originate.
The Kindle Fire, like other e-book readers and tablet computers, enables you to personalize the device with an owner name as well as enter your billing information for purchasing e-books, digital magazines and other content. Your Kindle Fire is automatically named during its initial activation, but the name is not permanent -- you can change it as many times as you want.
Antennas affect the quality of the sound you get from a radio in indirect ways. An antenna's job is to turn radio signals into electric currents, and an efficient antenna yields clear-sounding broadcasts with low noise, even with stations that transmit weak signals. The type of antenna -- whether it's used for AM, FM or satellite signals -- also strongly influences radio sound quality.
Although valve radios -- also called "vacuum tube" or just "tube" radios -- predate solid-state transistor models by 50 years, their working principles are much the same. A valve controls and amplifies a signal using an electric current in a vacuum; a transistor does a similar job using current in a silicon crystal. There are about a half-dozen valves of a few different types in a vintage tabletop radio.
Resistors used in vintage radios evolved from the early "dog bone" designs to tubular types. The way manufacturers color-coded them, such as the layout and patterns, also changed, although manufacturers retained the same set of colors and numbers. To read the ohm value of an old radio resistor, first determine its general type: a dog bone resistor is a cylinder with pronounced end caps, and the color code is painted onto the body; tubular resistors lack the end caps and have a different banded color layout than the bands used on modern parts. Decode the value based on the resistor…
In electronics, "gain" means the factor by which a device multiplies a signal's voltage. For a unity gain component, this factor is one -- not increasing or decreasing an input voltage, but keeping it the same. Although signal processing typically involves amplification, or a voltage increase, a unity gain circuit isolates sensitive circuit elements from one another, preventing interference and optimizing performance.
When your Sony Reader is failing to load digital publications or you accidentally installed the wrong system software onto the device, you can reset the e-book reader using its built-in hard reset utility. The utility corrects any problems you are experiencing as well as returns the device back to factory settings. Before launching the hard reset utility, back up any content on the e-book reader since the process erases everything when it returns the device to factory settings.
Tractor pulling is when tractors or trucks are designed to transport heavy loads. Pulling tractors often have modified engines to allow the tractor to bear the weight. Tractor pulling has also become a popular sport, where these modified or custom-built tractors pull heavy weights in a competition. The winner is determined by who was able to transport the weight the farthest, rather than by speed or time. If you have an antique tractor, you can build or modify your tractor's engine so it has more horsepower to participate in tractor pulling.
B&K's oscilloscope line follows standard conventions for electronic equipment. As with oscilloscopes from other manufacturers, a B&K has a display screen, controls for horizontal sweep and triggering and two or more independent input channels. Each channel lets you adjust for sensitivity to a wide range of electronic signal voltages. As of 2012, B&K offers two basic types of oscilloscope: analog and digital. Though digital models have extra features such as on-screen menus and signal analysis, the basic controls on both types work in similar ways.
A Class A bipolar junction transistor amplifier consists of a single transistor, two biasing resistors, a pair of capacitors and a battery or other DC power source. The BJT’s amplifying ability begins only when the input signal exceeds about .65 volts; below that value, the transistor is off. In addition, the transistor works only on positive voltages; it ignores the negative voltage half-cycle of an AC waveform. The biasing resistors turn AC input signals such as audio and radio frequencies into positive voltages; the transistor then amplifies these biased signals with very good fidelity.
The magic trick involving taking money out of someone's ear must be accomplished in a very specific way for success. Do the magic trick of taking money out of someone's ear with help from a magic teacher and performer in this free video clip.
You don't need to spend hundreds of dollars or more on a specialized kit in order to do certain types of magic tricks. Learn about magic tricks you can do with just a tie with help from a magic teacher and performer in this free video clip.
Birthday gigs and similar events are very important for beginning magicians everywhere. Get birthday gigs as a magician with help from a magic teacher and performer in this free video clip.
The rubber pencil magic trick relies on the perspective of the observer for success. Do a rubber pencil magic trick with help from a magic teacher and performer in this free video clip.
You don't have to be a professional magician to do magic with a coin and an ear. Do magic with a coin and an ear with help from a magic teacher and performer in this free video clip.
Pulling something out of someone's ear, be it a coin or something else, is a trick magicians have been doing forever. Learn about a magic trick on how to pull something out of someone's ear with help from a magic teacher and performer in this free video clip.
Making a coin disappear by rubbing it into your forearm is an age-old trick that will surely garner a lot of gasps from the crowd. Make a coin disappear by rubbing it on your forearm with help from a magic teacher and performer in this free video clip.
One of the keys to a successful magic trick is making the trick move smoothly and fluidly. Make your magic show move smoothly with help from a magic teacher and performer in this free video clip.
Making cards change places is a lot more straightforward than you might be assuming it is. Make cards changes places with help from a magic teacher and performer in this free video clip.
You can do a variety of different illusions and magic tricks using little more than your very own finger. Learn about a finger illusion magic trick with help from a magic teacher and performer in this free video clip.
Simple wooden putters, also called "mallets," are used in the game of croquet for hitting the ball and directing it through the hoops, also known as "wickets." The weight of the putter affects the amount of force you can exert upon the wooden or plastic balls. Creating several putters for different applications makes it possible to successfully navigate any croquet course. Choose a larger block of wood for the putter head if you want to create a putter that exerts more force on the ball. Use smaller blocks for more precise and gentle putting.
Early in their history, internal-combustion engines were very different from their present models. Although their basic overall design has not changed significantly, they used to be wired much more simply. A buzz coil was used to supply the needed higher voltage to create the spark for ignition. Some hobbyists and classic-car enthusiasts still use this technology.
The Texas Instruments 85 calculator is capable of supporting basic games and other small programs. If you want to utilize this capability and you have lost the original interface cable, you'll need to make a custom cable to transfer the data between your computer and the TI 85 calculator. This interface is built using inexpensive electronic components and basic soldering skills.
Electric motors help convert electricity into mechanical energy. Several types of electric motors are used to run engines and turbines for various applications including fans, blowers, pumps and other household appliances. Motors often vary in the type of power source they use and their output. WEG Electric Corp is a Latin America-based electric motor manufacturer that offers a wide range of pump, metric and general purpose motors for sale across the American continents.
Transistors employ semiconductors to amplify the strength of electrical signals. They are used to boost the signal power of everything from audio to power itself. But like any other electrical device, transistors have a limit to the amount of power they can receive. If a transistor receives more voltage than it can handle, the power will likely fry the transistor. The Darlington 2SB1558 transistor is rated for 140 volts. Avoid frying your 2SB1558. Build a protection circuit with a 140-volt fuse to protect your transistor from voltages that are too high.
Beam antennas, also known as Yagi antennas, are commonly used in ham radio operation. Beam antennas use a series of elements to send and receive transmissions in a focused direction, rather than 360 degrees as in omnidirectional designs. They can be as large or as small as needed. A simple version is something even the novice hobbyist can attempt. Once completed, you can send and receive transmissions surprisingly well, given the low cost and simple nature of the design and materials.
Though you can route audio through a traditional switch or relay directly, the metal contacts in the switch put unwanted electrical noise in the signal. By using a field-effect transistor, you avoid this noise. Here, a switch does not carry audio; the switch controls a transistor that carries the signal. Because the FET has no moving parts, it produces no objectionable pops or clicks when you switch it on. The FET, being a voltage-based device, draws very little current; an inexpensive 9-volt battery provides plenty of power for the circuit.
Making a steam rocket can be a fun and educational science experiement for parents and children alike. Steam rockets can be built using simple household items or inexpensive materials that can be purchased from a local hobby store. The rockets are nothing more than simple heat engines that are propelled away from the heat-releasing side of the engine.
Celestron, a company based in Southern California, produced its first telescope in 1960. Since then, the firm has offered a wide range of optical equipment for professional and hobby applications in the fields of astronomy, outdoor sports, science and education. Among these offerings, the SP-C8 telescope, a high-end scope made for deep-sky observation and astrophotography, gained prominence in the 1980s and 1990s.
Flying micro helicopters is a popular hobby among airplane and helicopter enthusiasts. Two models offered by MIA-Micro Flight, the mSR and the mCX, can be swapped out for one another when it comes to certain parts, such as the landing gear. Converting the mSR to land with mCX landing gear is simply a matter of retrofitting the gear from the former to the latter. Although fairly simple, some modification of the mSR is necessary.
Blacksmiths were once the only place to go when you wanted something fabricated from metal. Most blacksmithing now is done in factories working to mass produce iron and steel items. Some blacksmiths still work independently selling wrought iron crafts and tools. Blacksmithing has also become a hobby for people who like working with their hands and setting up a small anvil and forge in the backyard. Iron locks are one item that can be made with a small forge.
An oscilloscope is an electronic test instrument that displays signals on a small screen. Professional oscilloscopes made before the 1980s consisted of a metal chassis into which modules were plugged; a variety of modules performed specific measurement tasks. Today, one module, called a plug-in vertical amplifier, lets the oscilloscope handle a wide range of signal strengths, from millivolts to hundreds of volts.
The JR-RS310 receiver from JR Radios is mounted on RC vehicles and receives transmissions from the wireless controller used to operate the vehicle. You may experience problems with the receiver that prevent you from operating the vehicle as you want. Problems with the JR-RS310 often are caused by how the receiver is mounted on the vehicle or with how the receiver's channel is set. You can fix most problems by making small adjustments to the receiver's mount and settings.
An instrument amplifier’s signal-to-noise figure is a ratio of a standard output signal level to the noise the amplifier produces with no input signal. Audio noise is an unavoidable part of an amplifier’s electronic circuits; an amplifier designer strives to reduce the noise to very low levels. The signal-to-noise, or SNR, ratio is measured in units of decibels, or dB. To calculate SNR decibels, you divide the standard -10dBV signal, which is .316 volts RMS, by the noise voltage of the amplifier, and then take the common logarithm of the result and multiply by 10.
Bells large and small are created using a metal casting process that forms the initial shape and structure of the bell. When a bell is cast from steel or some other metal type, it typically has rough edges and surface imperfections. Lathes are used to create a smooth bell surface during a process called skirting. If a bell is not smoothed and skirted on a lathe, its tone could be compromised because of the excess metal on its surface.
One of the most successful electronic devices of all time, the operational amplifier, also known as the op amp, is a model of simplicity. It provides gain for analog signals through its two inputs – one inverting, one non-inverting. Calculations for an op amp circuit assume an ideal behavior for the device. Though no real-world op amp is perfectly ideal, they are usually close enough for the calculations to work for many practical situations.
An operational amplifier, or op amp, is a component designed to increase the strength of a wide range of electronic signals. Though even the most basic, inexpensive op amp is adequate for audio use, manufacturers have developed specialty devices with very low noise and distortion. These qualities are important in professional environments such as recording studios; the noise from many pieces of equipment adds up, so the components in them must be as quiet as possible.
Listening in on police, fire and emergency service communications, scanners are a great source of information. Scanners also tap into ham radio and marine frequencies, keeping you up-to-date on the newest events as they happen in real time. Creating an antenna to serve the scanner's low band involves making a J-pole antenna using simple wiring and tools.
A router is an upright rotary tool that is used to cut, shape and form wood. Routers are used to make recessed carved wooden signs and to uniformly sculpt items like bowls or trays. The router runs on a flat base with the tool tip projecting downward from the center. A template is used to confine the router within a specific shape or area. This template can be made of metal, thick plastic or MDF (medium density fiberboard). The template is used to guide the roller part of the router along the sides of the template shape. Usually templates are…
A band-pass filter is an electronic circuit that allows a range of signals through while reducing signals outside of its frequency band. Different band-pass filter designs have response curves ranging from a sharp peak to a wide band with gently sloping sides. Using an operational amplifier, or op amp, and a handful of resistors and capacitors, you can build a band-pass filter with a wide band. The center frequency of this filter is 1,700 Hz, which is midway between 1,200 and 2,200 Hz. The filter’s band is wide enough to pass these frequencies while attenuating those much higher or lower.
The White's Spectra V3 is a metal detector made by Kellyco. Kellyco also sells a few different types of headphones that can be used with the Spectra V3, including a pair of wireless headphones. While it's not necessary to use the pair sold by Kellyco, you can't use just any pair. Some headphones work better than others, and some wireless headphones may not work at all with the Spectra V3.
A piano score in a film creates a certain mood that only a piano can bring to a movie. One way to create a music score -- including a piano score -- is through GarageBand, a program that runs on Mac. This program is a way to achieve the piano score and add it to a movie that you also created by yourself
A potentiometer is an electronic component that lets the user vary its resistance and control the current flowing through it. In addition to the variable resistor, some potentiometers have switches that turn circuits on and off or select between different circuit functions. Wiring the variable resistor part of a switched potentiometer is the same as wiring one without a switch: The center solder lug connects to the potentiometer’s wiper, and the two side lugs connect to the ends of the resistive element. To wire the switch, you must first identify its common and switched terminals.
For almost any electronic circuit of non-trivial complexity, debugging is part of the building process. The circuit may have wiring mistakes, a component may be misconnected or the circuit design may have flaws. By asking a general set of questions, you can quickly isolate and solve problems to get the circuit working.
In audio mixer circuits, a component called an operational amplifier, or op amp, plays a central role. A mixer combines two or more audio signals electronically in varying proportions to produce a musically pleasing result. To accomplish this, the op amp performs several mathematical operations. First, it adds signals together and then it multiplies the result by a common factor to produce signal gain. When designing a mixer, a technician adds the expected values of audio signals and then finds a gain factor that produces clean, undistorted sound.
Many CO2 canisters have a burst disk to prevent the tank from exploding when pressure builds up inside. A mini burst disk is found on a lot of paintball guns that use CO2 compressed gas cylinders to give the gun power to shoot paint balls. A lot of the paintball guns on the market have dual burst disks installed. One burst disk is the high-pressure burst disk, used for when the tank builds up too much pressure. The second low-pressure burst disk, the mini burst disk, is a backup precaution for when the regulator fails. Inverting a mini burst disk…
A crisp, high-quality photo begins with a high-resolution image. Resolution refers to the number of pixels that an image contains within a given amount of space. A pixel, or picture element, is a tiny unit of color that combines with other pixels to produce an image. Increase the number of pixels in the image you capture, and its quality increases as well. Most modern cameras allow you change their resolution settings. This ability is useful because you may not want to shoot the highest-resolution image possible every time you snap your camera's shutter.
What is a "hobby?" By definition, a hobby is an activity that we do for pleasure during our leisure time. Over the years, America's hobbies have evolved -- where we once collected stamps and model planes, we're now surfing the Internet and playing "Angry Birds." To get a better idea of how Americans spend their leisure time in the 21st century, we looked into the Bureau of Labor Statistics' American Time Use Survey, or ATUS.
Origami uses paper folds and creases to create unique and intricate structures. The process does not use scissors, tears or adhesive and can create any number of animate and inanimate items. Making an origami dragon is a challenging paper folding technique, and a three-headed dragon is even more labor intensive. However, a three-headed dragon uses basic paper folds, with a little effort you can make an inspiring origami piece to share with your friends.
Knight’s Armament Co.'s M4 Carbine rail adaptor system handguard, or RAS, converts AR-15 and M-16 carbines with military specification modular weapon system setups. The KAC M4 RAS is crafted from aircraft-grade aluminum, aluminum heat shields and installs without specialized gunsmithing tools. Benefits of the M4 RAS include increased accuracy and T-markings that facilitate the introduction of accessories, such as bipods.
Chroma key is a compositing technique that layers two images together. Referred to in film as a "green screen" technique, chroma key isolates one color in the color spectrum and makes it transparent. A bright green or blue is often used because this color rarely shows up in a person's clothing, skin or hair color. After making the color transparent, a new background or image is introduced into the film or photo, and the image is changed with the chroma key computer software.
Determining the resonant frequency of a cooling tower fan, or any object, requires finding the frequency at which the fan will respond to vibrations. When an object resonates, any vibrations are amplified by the structure of the material, so the vibrations continue to intensify. Similar to a crystal wine glass that can be shattered by the right note, a cooling fan can be damaged if the motor runs at or near its resonant frequency. The type of material can greatly mitigate the resonance. For example, metal fan blades resonate far more vigorously than do fiberglass.
When you go hunting or shooting, a box stand (also called a shooting house) will keep you sheltered from the elements and out of sight of your prey. A strong box stand will hold numerous people. As a bonus, a box stand is more comfortable than laying on the ground or sitting against a tree. With a small pile of materials and a few tools, almost anyone can construct a strong box stand.
The error message stating that your e-book reader is already authorized to someone else means the device’s previous owner’s information is still present within the device, including e-book-purchasing data. Authorizing an e-book reader allows you to download and view digital content from an e-book-selling service or store, such as Barnes & Noble or Adobe. You must deauthorize your e-book reader before entering your personal information into and using the device.
Many hobbyists enjoy experimenting with electronics, especially homemade printed circuit boards, or PCBs. These boards can be built with a variety of different electronic components, such as resistors and capacitors. The circuit pathway within the board, matched with specifically positioned components, creates a working electronic. An electronic combination lock is a PCB kit that hobbyists can build to form a security device; a user inputs a pass code into the PCB to allow power to flow to an attached item.
Smelt fish belong to the Osmeridae family, and there are 15 species of smelt. The average smelt fish grows to around 7.9 inches although some species of smelt can grow as long as 28 inches. Smelt fish resemble salmon in shape but come in a variety of colors. Although smelt fish are eaten by a variety of sea fish, including salmon, they are also smoked, grilled, sautéed or baked for human consumption. Using a quick strike rig is one of the best ways to rig a smelt fish for ice fishing.
The IC F-100 is an entry-level series of mobile radios produced by ICOM. F-100 radios can be programmed, and once programmed are ready to be field-tested. This series is good for people who are novices at using mobile radios, and are used in the construction industry, in taxis and in agricultural vehicles.
The Proto Matrix M6 paintball marker, also known as the PM6, has a removable bolt that you can modify with different parts. The top hat has an o-ring on both ends of the piece. You can replace the o-rings with a different pair, such as o-rings made by Lucky, to change how the PM6 operates. The Lucky o-rings increase the efficiency of the PM6 marker.
In the old-school world of film photography, you used different types of film for different looks to your finished photographs. Kodak made an especially popular film known as Kodachrome Film Type A, which was primarily meant for use indoors with floodlights. If you wanted to use Type A film outdoors, your photos would have a bluish tint to them. Add a Kodachrome Adapter-A filter to your camera and you won't have these problems. The color will even out and once more look true to life, with warmer hues and no blue tinting.
Dry docks are used to hold water away from the hull of a boat during storage or maintenance. Permanent docks are built into the sides of canals and lakes, while boats docked in marinas use plastic dry docks that sit inside the water. Building a permanent dry dock can be done at home. Check on the laws and guidelines in your area to see of you need to obtain permits to begin your project.
The essence of an electric fan, like the ones in your computer, is a windmill in reverse. The parts are all the same, but the flow of electricity is reversed between a fan and a windmill. Computer fans don't make the most efficient windmills, but their small size and inexpensive nature make them ideal for experimentation and do-it-yourself projects. Converting a computer fan into a mini windmill requires soldering skills and a basic knowledge of electrical circuits.
A fluid bed is a device that is used to evenly coat lures and jig heads with powder paint. The fluid bed suspends the powder paint, allowing you to get an even coat while swishing the jig head through the paint. This reduces your chances of clogging the eye of the jig head, making it easier to slip a fishing line through it.
Many modern electronic devices, including MP3 players, cellphones and laptop computers, get their power from DC adaptors. Electronics cannot run directly from the 115-volt household alternating current, so they use an adaptor to convert AC into low-voltage DC. The input and output wattage ratings of adaptors ranges from about 4 watts to more than 100 watts; generally, the smaller the electronic device, the less wattage it consumes.
The 1N4148 is a general-purpose signal diode having a maximum reverse voltage of 100 and forward current of 300 milliamps. The designation 1N4148 is an industry-standard part number from the Joint Electron Device Engineering Council, or JEDEC; numerous semiconductor manufacturers make the device with the same characteristics. The diode functions as a high-speed switch and signal detector in audio and radio applications.
The sweep or steersman of a dragon boat uses the sweep oar (also known as a "tiller") to steer the boat. A sweep oar, unlike a rudder, can come out of the water for an out of water recovery. Sweep oars can be manufactured in a variety of materials, lengths, grip types and stiffness. Manufactured oars are much stronger and reliable for competitive dragon boat racing. For hobbyists, a sweep oar made at home can also suffice .
The purpose of a slide switch is to control the current in an electrical circuit, to turn it on and off. The switch keeps its setting once you slide it on or off, in contrast to other kinds of switches such as a momentary push-button that stays on only as long as you press on it. A slide switch is a basic type of electrical control; you can find them on consumer electronics, industrial equipment and scientific instruments.
You can turn an ordinary concession window into something more attractive when you add awnings above the windows. Since the window of the concession stand is where all the action takes place, it's important to jazz up the windows' features to make a comfortable area for your customers. Awnings can make your concession stand window stand out above your competitors to attract more business to your concession. The struts are what hold up the awnings that you add, so be sure to measure them properly so the add ons don't collapse.
Anyone who has some woodworking savvy can build a square freestanding display case for showing off collectible Hot Wheels. You will need to have a general idea of the type of display case you want ahead of time, especially what size you need. The specific design is limited only by your own imagination and preferences; most Hot Wheels display cabinets incorporate some combination of wood and glass.
Sports photography that involves capturing the action of a moving vehicle, such as a car, motorcycle or motorboat, requires a technique that helps you frame the image and focus. Taking motorsports photographs also requires an understanding of the sports' rules, participants and conflicts, which helps you anticipate and capture significant action.
Gas engines work by igniting fuel in a chamber when the crankshaft turns. As the piston moves down, the fuel is sent to the carburetor where it mixes with air. Then when the piston moves back up, it compresses the gas and air mixture and ignites them, sending the pistons back down and expelling gases through the exhaust port. Porting the engine increases the flow of the gas and air mixture and boosts the performance of the engine. Radio-controlled, or RC, engines are most often ported for racing. Chung Yang, or CY, is one common manufacturer of RC engines.
Tractor pulling, or power pulling, is a popular motorsport in Europe, Australia, Brazil and the United States. The initial tractor pulling championships in the United States were conducted in Missouri and Ohio in 1929. By the 1950s, they became a regular feature at most county fairs. The early versions of the sport required the participants to pull heavy sledges with their tractors, the winner being the one who pulled it the farthest. As the technology improved, the tractors and weights have been modified and standardized rules have been established by the National Tractor Pullers Association. Some hobbyists prefer to build…
One thing that sets apart an expertly crafted scale RC airplane model is the level of detail with which you finish it. A model with flat colors and a lack of realistic detail can look amateurish. Finishing your scale RC plane with the appearance of rivets, aging and other details, on the other hand, will reveal your passion for careful craftsmanship.
Printers come in a variety of sizes and styles, from small desktop personal printers to large warehouse printers. People use printers in offices every day, and photofinishers use printers to fulfill photo orders. Different printers use different methods to print documents or photos, some of which involve chemicals that can be toxic when inhaled.
While it is impossible to preserve a pumpkin forever -- since all pumpkins will eventually become moldy and decay, it is possible to delay this process. You can do this by killing the bacteria inside the pumpkin that start the decay process then applying a substance that will inhibit further bacterial growth and keep the pumpkin from drying out.
Cigar fanatics consider cigar smoking an art or a skill, depending upon the cigar smoker questioned. Rituals accompany cigar smoking, with the rituals becoming almost as important as the smoke itself. While movie cowboys like John Wayne and Eastwood bit the end off of their cigars before lighting up, today's cigar aficionados use various types of cutters instead. Cigar cutters, as well as many other cigar-smoking accessories, make good gifts for cigar fanatics.
A comparator is an electronic circuit having two inputs and an output. The output has only two states: “high” and “low.” The high state is near the comparator’s positive supply voltage, between five and 15 volts, and the low state is near the comparator’s negative supply voltage. As signals at the inputs change, the output state alternates between high and low voltages. The comparator’s duty cycle is the percentage of the time its output is high.
White balance refers to changing the color cast in a photograph. The color cast is sometimes rendered blue, green or orange depending on the light conditions when the picture was snapped. With digital photography, fixing the white balance is as easy as downloading a photograph to your computer, balancing the color cast and printing the edited version. Software for altering photographs is available at office supply stores or computer manufacturers.
Many welders prefer to work with copper and copper alloys, since the substance provides an adequate surface for heat conductivity. In fact, forming copper welds is one of the most common welding processes for fusing two metal items together. The proper tools and techniques must be applied to the copper weld for a secure connection.
One of the strongest ways to draw the viewer into a photgraph is by adding depth to the composition of your work. Photographers manipulate their environments through perspective and shadow to capture moments in time that live on long after their subjects are but a passing memory. Dimension allows the audience to experience the emotion of a picture on a deeper, more personal level and you can utilize these techniques to create your own richly layered moods for all the world to see.
Sun glare and shadows often unintentionally cause pictures to be washed out with blurred and indistinguishable detail. While this may be frustrating when you are trying to take photos of the family reunion, a washed-out sun glow effect in your photos does, in certain circumstances, creates a dramatic artistic expression. The refraction and diffusion of the sun’s rays can contribute to lens flare and give your photo bright streaks, a reduction in contrast and a washed-out image enveloped in a sunny glow.
Any time you use a new type of film for your photography, it's important to familiarize yourself with how the negatives are developed. When it comes to shooting with Delta ISO 400 film, photographers do not have to do much adjusting, since the film is mostly compatible with standard development procedures. However, you will need to develop it slightly longer than you would with more conventional types of film, for enhanced quality results.